Combines sixty onboard digital points in one standard S7-200 SMART CPU.
Technical Summary
6ES7288-1SR60-0AA1 is the Siemens SIMATIC S7-200 SMART CPU SR60. Its AC/DC/relay architecture combines an 85 to 264 V AC supply, 36 onboard 24 V DC digital inputs and 24 relay outputs rated 2 A.
The 0AA1 article belongs to the firmware V2.7 generation. Siemens states that 0AA1 CPUs cannot be downgraded to V2.6 or earlier and that older 0AA0 CPUs cannot be upgraded to V2.7, so the complete article number is a commissioning boundary.
The CPU provides 50 KB of program and data memory, one industrial Ethernet interface, one RS485 interface, optional microSDHC support and an integrated web server.
Specifications
| Manufacturer | Siemens |
|---|---|
| Exact article number | 6ES7288-1SR60-0AA1 |
| Product family | SIMATIC S7-200 SMART |
| CPU designation | CPU SR60 |
| CPU architecture | AC/DC/relay |
| Supply voltage | 85 to 264 V AC, 47 to 63 Hz |
| Digital inputs | 36 onboard, 24 V DC |
| Digital outputs | 24 onboard relay outputs, 2 A |
| Program and data memory | 50 KB |
| Industrial Ethernet interfaces | 1 |
| RS485 interfaces | 1 |
| Memory-card option | microSDHC |
| Integrated web server | Supported |
| Real-time clock backup | 7 days |
| Bit execution time | 150 ns |
| Word execution time | 1.2 µs |
| Floating-point execution time | 3.6 µs |
| Engineering software | STEP 7-Micro/WIN SMART |
| Firmware generation | 0AA1 hardware supports V2.7; no downgrade to V2.6 or earlier |
Features
Uses relay outputs for switching applications while retaining 24 V DC digital input sensing.
Supports Ethernet engineering and controller communication together with an onboard RS485 serial path.
Provides web-server and removable microSDHC functions within the documented V2.7 generation.
Compatibility
- Use STEP 7-Micro/WIN SMART V2.7 or a later release that explicitly supports the 0AA1 CPU generation.
- Check expansion-module count, total current demand, Ethernet addressing and RS485 network settings against the installed project.
- Apply suitable suppression and contact protection for the actual relay loads; output type must not be treated as interchangeable with ST transistor CPUs.
- Do not load a V2.6-or-earlier firmware package into 6ES7288-1SR60-0AA1 or assume an 0AA0 CPU can be upgraded to the same generation.
Replacement
- Archive the Micro/WIN SMART project, CPU firmware record, IP settings, serial parameters and password state before removal.
- Isolate AC supply and field power, identify every terminal and verify relay load ratings before moving wiring.
- Restore the approved project only to a compatible 0AA1 CPU and confirm expansion-module detection and communications.
- Complete input, relay-output, web-server and network checks before returning the machine to automatic operation.
FAQ
Q01
Can an older 0AA0 CPU be upgraded to become 6ES7288-1SR60-0AA1?
No. Siemens separates the 0AA1 V2.7 generation from 0AA0 hardware; an 0AA0 CPU cannot be upgraded to V2.7.
Q02
What evidence should accompany a 6ES7288-1SR60-0AA1 spare request?
Provide clear front and side labels, the Micro/WIN SMART project, firmware version, expansion list, IP settings and RS485 configuration.
Q03
Can an ST60 transistor-output CPU replace 6ES7288-1SR60-0AA1 without redesign?
No automatic equivalence should be assumed. Relay and transistor outputs have different supply, load and wiring requirements.
Q04
How should a stored 6ES7288-1SR60-0AA1 be prepared before installation?
Verify the exact sealed label, inspect terminals, confirm the supported engineering-software release and stage the approved project offline.
Q05
What proves the replacement CPU is ready for service?
A controlled test should confirm the project checksum, all expansion modules, communications, every affected I/O point and the machine safety sequence.
About IndustryParts
https://www.industryparts.com/Exact CPU generation and relay architecture remain visible
IndustryParts prepares 6ES7288-1SR60-0AA1 enquiries with the complete Siemens article number, firmware boundary and installed I/O architecture recorded.
- 0AA1 generation retained
- AC/DC/relay identity checked
- Project and network evidence requested
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